MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to various domains, many of which are hosted on compromised or disposable infrastructure, suggesting a link farm or phishing campaign. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://mg001.cn/upload_fck/file/2021-5-11/20210511224628461030.pdf
- https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/5510447b3efe426ced013e172b73e643/vexosigoruzugu.pdf
- http://sibleyestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nexunoxumatuxozaz.pdf
- http://arcenevents.nl/site/upload/files/durejifafavugobavegovon.pdf
- https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/373085ht4v0tj1bj2s62b8ndai/safikijovuxubegewa.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607ceed423256---fotinebenibazi.pdf
- http://consol.hu/images/uploadedimages/file/74838865299.pdf
- https://gloriouz.in/ckfinder/userfiles/files/famegoxilitenugakewi.pdf
- https://triosms.com/userfiles/file/45798528628.pdf
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608542fd5aee5---fonudulinekowobafefadov.pdf
- https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/12fa1njuvaocq9fndpnn8h678n/80646549612.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073037358287---21004702978.pdf
- http://kirilmazbardak.com/userfiles/file/25024234189.pdf
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/df6f5136f957c6f11383137b263b62c7/virizogaxajupakorufiwelu.pdf
- http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c698e3d1e6f---pirapa.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b49e6bec54f---gemag.pdf
- https://mclarenquartz.in/ci/userfiles/files/nasutezexegujafegeguwen.pdf
- http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad7ab3d4c6d---71929816720.pdf
- http://self119.net/upload/userfiles/2021/05/files/210529145735.pdf
- http://takeacode.eu/user/d41d8cd98f00b204e9800998ecf8427e/file/94902106284.pdf
- https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/dcebad6681622cee0ca5e10f6f60d2ce/41402573402.pdf
- http://permianhighschool1970.com/clients/e/ef/efee9fcbc667252fc4b649c8163d3733/File/sebidometabureliju.pdf
- http://jtipartner.com/ckfinder/userfiles/files/pasitugesad.pdf
- http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160af5d9ba7e1d---loburuvilarawitofof.pdf
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b077a8b6507---36270956851.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=accrued+salaries+and+wages+on+balance+sheet
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eedf.bincd040cc5a13af23df5b2ab7bf7b182c47761af347adb75f854b6078caa7cfc88 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEEDF | 16628 bytes |
font_01_sfnt_off00011a1b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A1B | 16792 bytes |
font_02_sfnt_off00013232.bincde8b44ff665d585068b1e5ccc91443ad736a5d90459143a9a998cb3d1a89f4c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13232 | 10956 bytes |
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